Compositions for spore removal

Patent metadata

Field	Value
Publication number	US-10555889-B2
Application number	US-201615736853-A
Country	US
Kind code	B2
Filing date	Jun 27, 2016
Priority date	Jul 1, 2015
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

Disclosed herein are compositions that include at least about 85 wt % of a hydroalcoholic solution that includes at least about 1 wt % water; and about 30 to about 85 wt % of at least one C1 to C4 alkyl alcohol based on the total weight of the hydroalcoholic solution; and acrylate copolymer particles dispersed in the hydroalcoholic solution, the acrylate copolymers particles being the reaction product of a reaction mixture, the reaction mixture including monomers, the monomers including from about 5 wt % to about 50 wt % of at least one high Tg monomer; and from about 20 w % to about 80 wt % of at least one low Tg monomer where the wt % of the low and high Tg monomers are with respect to the total weight of the monomers in the reaction mixture, wherein the particles have a number average diameter of at least about 100 nm.

First claim

The invention claimed is:

1. A composition comprising:
a) at least 85 wt % of a hydroalcoholic solution, the hydroalcoholic solution comprising:
at least 1 wt % water based on the total weight of the hydroalcoholic solution; and
30 wt % to 85 wt % of at least one C 1 to C 4 alkyl alcohol based on the total weight of the hydroalcoholic solution; and

b) acrylate copolymer particles dispersed in the hydroalcoholic solution, the acrylate copolymer particles comprising the reaction product of a reaction mixture, the reaction mixture comprising monomers, the monomers comprising:
from 5 wt % to 50 wt % of at least one high Tg monomer having an alkyl carbon chain length in a range from 1 to 3, and having a Tg from 40° C. to 150° C., where the wt % of the high Tg monomer is with respect to the total weight of the monomers in the reaction mixture; and
from 20 wt % to 80 wt % of at least one low Tg monomer having an alkyl carbon chain length of at least 4 and having a Tg from −20° C. to −60° C. where the wt % of the low Tg monomer is with respect to the total weight of the monomers in the reaction mixture,
wherein the particles have a number average diameter of at least 100 nm and not greater than 500 nm.

2. The composition according to claim 1 , wherein there is more of the at least one low Tg monomer than there is of the at least one high Tg monomer by weight in the reaction mixture.

3. The composition according to claim 1 , wherein there is not greater than 5 wt % of the acrylate copolymer particles in the composition based on the total weight of the composition.

4. The composition according to claim 1 , wherein there is from 0.5 wt % to 4 wt % of the acrylate copolymer particles in the composition based on the total weight of the composition.

5. The composition according to claim 1 , wherein there is at least 60 wt % of the at least one alcohol in the composition based on the total weight of the composition.

6. The composition according to claim 1 , wherein the acrylate copolymer is the reaction product of 20 wt % to 40 wt % of the at least one high Tg monomer based on the total weight of the monomers in the reaction mixture.

7. The composition according to claim 1 , wherein the acrylate copolymer is the reaction product of 60 wt % to 80 wt % of the at least one low Tg monomer based on the total weight of the monomers in the reaction mixture.

8. The composition according to claim 1 , wherein the at least one low Tg monomer has an alkyl carbon chain length from 4 to 10.

9. The composition according to claim 1 , wherein the acrylate copolymer particles have a number average diameter from 200 to 500 nm.

10. The composition according to claim 1 , wherein the at least one C 1 to C 4 alcohol is selected from ethanol, n-propanol, 2-propanol or mixtures thereof.

11. The composition according to claim 1 further comprising an antimicrobial agent in addition to the alcohol.

12. The composition according to claim 11 , wherein the antimicrobial agent is cationic.

13. A composition comprising:
at least 1 wt % water based on the total weight of the composition;
from 85 wt % to 98 wt % of at least one C 1 to C 4 alkyl alcohol based on the total weight of the composition; and
0.5 TO 4.0 wt % acrylate copolymer particles based on the total weight of the composition, where the acrylate copolymer particles are dispersed in the water and alcohol, the acrylate copolymer particles comprising the reaction product of a reaction mixture, the reaction mixture comprising monomers, the monomers comprising:
from 5 wt % to 50 wt % of at least one high Tg monomer having an alkyl carbon chain length in a range from 1 to 3, and having a Tg from 40° C. to 150° C., where the wt % of the high Tg monomer is with respect to the total weight of the monomers in the reaction mixture; and
from 20 wt % to 80 wt % of at least one low Tg monomer having an alkyl carbon chain length of at least 4 and having a Tg from −20° C. to −60° C., where the wt % of the low Tg monomer is with respect to the total weight of the monomers in the reaction mixture,
wherein the particles have a number average diameter of at least 100 nm and not greater than 500 nm.

14. A method of removing at least one spore from a surface, the method comprising:
contacting the surface with a composition, the composition comprising:
at least 85 wt % of a hydroalcoholic solution based on the total weight of the composition, the hydroalcoholic solution comprising:
at least 1 wt % water based on the weight of the hydroalcoholic solution, and
30 wt % to 95 wt % of at least one C 1 to C 4 alkyl alcohol based on the total weight of the hydroalcoholic solution; and

acrylate copolymer particles dispersed in the hydroalcoholic solution, the acrylate copolymer particles comprising the reaction product of a reaction mixture, the reaction mixture comprising monomers, the monomers comprising:
from 5 wt % to 50 wt % of at least one high Tg monomer having an alkyl carbon chain length in a range from 1 to 3, and having a Tg from 40° C. to 150° C., where the wt % of the at least one high Tg monomer is with respect to the total weight of the monomers in the reaction mixture; and
from 20 w % to 80 wt % of at least one low Tg monomer having an alkyl carbon chain length of at least 4 and having a Tg from −20° C. to −60° C., where the wt % of the at least one low Tg monomer is with respect to the total weight of the monomers in the reaction mixture,
wherein the acrylate copolymer particles have an average diameter of at least 100 nm and not greater than 500 nm.

15. The method according to claim 14 , wherein the surface is dipped in the composition.

16. The method according to claim 14 , wherein the composition is applied to the surface.

17. The method according to claim 14 further comprising removing at least a portion of the composition, wherein removing at least a portion of the composition removes at least one spore from the surface.

18. The method according to claim 17 , wherein the step of removing at least a portion of the composition comprises mechanical action.

19. The method according to claim 14 , wherein the surface comprises skin.

Assignees

• 3M Innovative Properties Co

Inventors

• Parthasarathy Ranjani V
• Kumar Ramesh C
• Scholz Matthew T
• Swanson Steven P
• Satterwhite Erin A

Classifications

• A61P43/00

  Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00 · CPC title

• A61P31/04

  Antibacterial agents · CPC title

• A61K8/0241

  Containing particulates characterized by their shape and/or structure (see also A61K8/04, A61K8/11, and A61K8/14, further aspects are classified in A61K2800/40 and subcodes) · CPC title

• A61L2/18

  Liquid substances · CPC title

• A61K8/34

  Alcohols · CPC title